<template>
  <div class="dashboard-container">
    <div class="app-container">
      <el-card>
        <el-tabs>
          <!-- 放置页签 -->
          <el-tab-pane label="角色管理">
            <!-- 新增角色按钮 -->
            <el-row style="height:60px">
              <el-button
                icon="el-icon-plus"
                size="small"
                type="primary"
                @click="hAdd"
              >新增角色</el-button>
            </el-row>
            <!-- 表格 -->
            <el-table :data="list" border>
              <el-table-column label="序号" width="120" type="index" />
              <el-table-column label="角色名称" width="240" prop="name" />
              <el-table-column label="描述" prop="description" />
              <el-table-column label="操作">
                <template v-slot="{row}">
                  <el-button size="small" type="success" @click="assignPer(row.id)">分配权限</el-button>
                  <el-button size="small" type="primary" @click="hEdit(row)">编辑</el-button>
                  <el-button size="small" type="danger" @click="hDel(row.id)">删除</el-button>
                </template>
              </el-table-column>
            </el-table>

            <el-row type="flex" justify="center" align="middle" style="height: 60px">
              <!-- 分页组件 -->
              <el-pagination
                :current-page="pageParams.page"
                :page-sizes="[2, 3, 5, 10,20]"
                :page-size="pageParams.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total"
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
              />
            </el-row>
          </el-tab-pane>
        </el-tabs>
      </el-card>
      <el-dialog
        title="编辑弹层"
        :close-on-click-modal="false"
        :close-on-press-escape="false"
        :visible.sync="showDialog"
        @closed="resetForm"
      >
        <el-form ref="roleForm" :model="roleForm" :rules="rules" label-width="100px">
          <el-form-item label="角色名称" prop="name">
            <el-input v-model="roleForm.name" />
          </el-form-item>
          <el-form-item label="角色描述" prop="description">
            <el-input v-model="roleForm.description" />
          </el-form-item>
        </el-form>
        <!-- 底部 -->
        <el-row slot="footer" type="flex" justify="center">
          <el-col :span="6">
            <el-button size="small">取消</el-button>
            <el-button size="small" type="primary" @click="hSubmit">确定</el-button>
          </el-col>
        </el-row>
      </el-dialog>
      <el-dialog title="分配权限" :visible.sync="perDialog">
        <assignPermission :cur-id="curId" @success="perDialog = false" />
      </el-dialog>
    </div>
  </div>
</template>

<script>
import { addRoles, delRoles, getRoles, updateRoles } from '@/api/settings'
import assignPermission from './assignPermission.vue'
export default {
  components: {
    assignPermission
  },
  data() {
    return {
      curId: '',
      perDialog: false,
      pageParams: {
        page: 1,
        pagesize: 2
      },
      roleForm: {
        name: '',
        description: ''
      },
      rules: {
        name: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ],
        description: [
          { required: true, message: '请输入角色描述', trigger: 'blur' }
        ]
      },
      list: [],
      total: 0,
      showDialog: false,
      isEdit: false
    }
  },
  created() {
    this.loadRoles()
  },
  methods: {
    assignPer(id) {
      this.perDialog = true
      this.curId = id
    },
    resetForm() {
      this.$refs.roleForm.resetFields()
      this.roleForm = {
        name: '',
        description: ''
      }
    },
    async loadRoles() {
      const res = await getRoles(this.pageParams)
      this.list = res.data.rows
      this.total = res.data.total
    },
    hSubmit() {
      this.$refs.roleForm.validate(valid => {
        if (!valid) return
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    async doAdd() {
      const res = await addRoles(this.roleForm)
      if (res.code === 10000) {
        this.$message.success(res.message)
        this.total++ // 解决增加总数后 页面不跳转到最后一页的问题
        const maxPage = Math.ceil(this.total / this.pageParams.pagesize)
        this.pageParams.page = maxPage
        this.loadRoles()
        this.showDialog = false
      }
    },
    async doEdit() {
      const res = await updateRoles(this.roleForm)
      if (res.code === 10000) {
        this.$message.success(res.message)
        this.loadRoles()
        this.showDialog = false
      }
    },
    hAdd() {
      this.showDialog = true
      this.isEdit = false
    },
    hEdit(row) {
      // 这里两个数据指向的同一个地方 编辑中修改时页面数据也会被修改  这里需要用到浅拷贝
      this.roleForm = { ...row }
      this.showDialog = true
      this.isEdit = true
    },
    async hDel(id) {
      const res = await delRoles(id)
      console.log(res)
      if (res.code === 10000) {
        this.$message.success(res.message)
        if (this.list.length === 1) {
          this.pageParams.page--
          if (this.pageParams.page <= 0) {
            this.pageParams.page = 1
          }
        }
        this.loadRoles()
      }
    },
    // 控制 每页显示多少条的函数
    handleSizeChange(val) {
      // console.log(`每页 ${val} 条`)
      this.pageParams.page = 1
      this.pageParams.pagesize = val
      this.loadRoles()
    },
    handleCurrentChange(val) {
      // console.log(`当前页: ${val}`)
      this.pageParams.page = val
      this.loadRoles()
    }
  }
}
</script>

<style>

</style>
